// Copyright (c) 2012 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include #include #include "base/strings/string_piece.h" #include "base/strings/utf_string_conversions.h" #include "testing/gtest/include/gtest/gtest.h" namespace base { template class CommonStringPieceTest : public ::testing::Test { public: static std::string as_string(const char* input) { return input; } static const std::string& as_string(const std::string& input) { return input; } }; template <> class CommonStringPieceTest : public ::testing::Test { public: static std::u16string as_string(const char* input) { return UTF8ToUTF16(input); } static std::u16string as_string(const std::string& input) { return UTF8ToUTF16(input); } }; typedef ::testing::Types SupportedCharTypes; TYPED_TEST_SUITE(CommonStringPieceTest, SupportedCharTypes); TYPED_TEST(CommonStringPieceTest, CheckComparisonOperators) { #define CMP_Y(op, x, y) \ { \ std::basic_string lhs(TestFixture::as_string(x)); \ std::basic_string rhs(TestFixture::as_string(y)); \ ASSERT_TRUE((BasicStringPiece((lhs.c_str())) \ op BasicStringPiece((rhs.c_str())))); \ ASSERT_TRUE(BasicStringPiece(lhs) op rhs); \ ASSERT_TRUE(lhs op BasicStringPiece(rhs)); \ ASSERT_TRUE((BasicStringPiece((lhs.c_str())) \ .compare(BasicStringPiece((rhs.c_str()))) \ op 0)); \ } #define CMP_N(op, x, y) \ { \ std::basic_string lhs(TestFixture::as_string(x)); \ std::basic_string rhs(TestFixture::as_string(y)); \ ASSERT_FALSE((BasicStringPiece((lhs.c_str())) \ op BasicStringPiece((rhs.c_str())))); \ ASSERT_FALSE(BasicStringPiece(lhs) op rhs); \ ASSERT_FALSE(lhs op BasicStringPiece(rhs)); \ ASSERT_FALSE((BasicStringPiece((lhs.c_str())) \ .compare(BasicStringPiece((rhs.c_str()))) \ op 0)); \ } CMP_Y(==, "", "") CMP_Y(==, "a", "a") CMP_Y(==, "aa", "aa") CMP_N(==, "a", "") CMP_N(==, "", "a") CMP_N(==, "a", "b") CMP_N(==, "a", "aa") CMP_N(==, "aa", "a") CMP_N(!=, "", "") CMP_N(!=, "a", "a") CMP_N(!=, "aa", "aa") CMP_Y(!=, "a", "") CMP_Y(!=, "", "a") CMP_Y(!=, "a", "b") CMP_Y(!=, "a", "aa") CMP_Y(!=, "aa", "a") CMP_Y(<, "a", "b") CMP_Y(<, "a", "aa") CMP_Y(<, "aa", "b") CMP_Y(<, "aa", "bb") CMP_N(<, "a", "a") CMP_N(<, "b", "a") CMP_N(<, "aa", "a") CMP_N(<, "b", "aa") CMP_N(<, "bb", "aa") CMP_Y(<=, "a", "a") CMP_Y(<=, "a", "b") CMP_Y(<=, "a", "aa") CMP_Y(<=, "aa", "b") CMP_Y(<=, "aa", "bb") CMP_N(<=, "b", "a") CMP_N(<=, "aa", "a") CMP_N(<=, "b", "aa") CMP_N(<=, "bb", "aa") CMP_N(>=, "a", "b") CMP_N(>=, "a", "aa") CMP_N(>=, "aa", "b") CMP_N(>=, "aa", "bb") CMP_Y(>=, "a", "a") CMP_Y(>=, "b", "a") CMP_Y(>=, "aa", "a") CMP_Y(>=, "b", "aa") CMP_Y(>=, "bb", "aa") CMP_N(>, "a", "a") CMP_N(>, "a", "b") CMP_N(>, "a", "aa") CMP_N(>, "aa", "b") CMP_N(>, "aa", "bb") CMP_Y(>, "b", "a") CMP_Y(>, "aa", "a") CMP_Y(>, "b", "aa") CMP_Y(>, "bb", "aa") std::string x; for (int i = 0; i < 256; i++) { x += 'a'; std::string y = x; CMP_Y(==, x, y); for (int j = 0; j < i; j++) { std::string z = x; z[j] = 'b'; // Differs in position 'j' CMP_N(==, x, z); } } #undef CMP_Y #undef CMP_N } TYPED_TEST(CommonStringPieceTest, CheckSTL) { std::basic_string alphabet( TestFixture::as_string("abcdefghijklmnopqrstuvwxyz")); std::basic_string abc(TestFixture::as_string("abc")); std::basic_string xyz(TestFixture::as_string("xyz")); std::basic_string foobar(TestFixture::as_string("foobar")); BasicStringPiece a(alphabet); BasicStringPiece b(abc); BasicStringPiece c(xyz); BasicStringPiece d(foobar); BasicStringPiece e; std::basic_string temp(TestFixture::as_string("123")); temp += static_cast(0); temp += TestFixture::as_string("456"); BasicStringPiece f(temp); ASSERT_EQ(a[6], static_cast('g')); ASSERT_EQ(b[0], static_cast('a')); ASSERT_EQ(c[2], static_cast('z')); ASSERT_EQ(f[3], static_cast('\0')); ASSERT_EQ(f[5], static_cast('5')); ASSERT_EQ(*d.data(), static_cast('f')); ASSERT_EQ(d.data()[5], static_cast('r')); ASSERT_EQ(e.data(), nullptr); ASSERT_EQ(*a.begin(), static_cast('a')); ASSERT_EQ(*(b.begin() + 2), static_cast('c')); ASSERT_EQ(*(c.end() - 1), static_cast('z')); ASSERT_EQ(*a.rbegin(), static_cast('z')); ASSERT_EQ(*(b.rbegin() + 2), static_cast('a')); ASSERT_EQ(*(c.rend() - 1), static_cast('x')); ASSERT_EQ(a.rbegin() + 26, a.rend()); ASSERT_EQ(a.size(), 26U); ASSERT_EQ(b.size(), 3U); ASSERT_EQ(c.size(), 3U); ASSERT_EQ(d.size(), 6U); ASSERT_EQ(e.size(), 0U); ASSERT_EQ(f.size(), 7U); ASSERT_TRUE(!d.empty()); ASSERT_TRUE(d.begin() != d.end()); ASSERT_EQ(d.begin() + 6, d.end()); ASSERT_TRUE(e.empty()); ASSERT_EQ(e.begin(), e.end()); d = BasicStringPiece(); ASSERT_EQ(d.size(), 0U); ASSERT_TRUE(d.empty()); ASSERT_EQ(d.data(), nullptr); ASSERT_EQ(d.begin(), d.end()); ASSERT_GE(a.max_size(), a.size()); } TYPED_TEST(CommonStringPieceTest, CheckFind) { typedef BasicStringPiece Piece; std::basic_string alphabet( TestFixture::as_string("abcdefghijklmnopqrstuvwxyz")); std::basic_string abc(TestFixture::as_string("abc")); std::basic_string xyz(TestFixture::as_string("xyz")); std::basic_string foobar(TestFixture::as_string("foobar")); BasicStringPiece a(alphabet); BasicStringPiece b(abc); BasicStringPiece c(xyz); BasicStringPiece d(foobar); d = Piece(); Piece e; std::basic_string temp(TestFixture::as_string("123")); temp.push_back('\0'); temp += TestFixture::as_string("456"); Piece f(temp); TypeParam buf[4] = {'%', '%', '%', '%'}; ASSERT_EQ(a.copy(buf, 4), 4U); ASSERT_EQ(buf[0], a[0]); ASSERT_EQ(buf[1], a[1]); ASSERT_EQ(buf[2], a[2]); ASSERT_EQ(buf[3], a[3]); ASSERT_EQ(a.copy(buf, 3, 7), 3U); ASSERT_EQ(buf[0], a[7]); ASSERT_EQ(buf[1], a[8]); ASSERT_EQ(buf[2], a[9]); ASSERT_EQ(buf[3], a[3]); ASSERT_EQ(c.copy(buf, 99), 3U); ASSERT_EQ(buf[0], c[0]); ASSERT_EQ(buf[1], c[1]); ASSERT_EQ(buf[2], c[2]); ASSERT_EQ(buf[3], a[3]); ASSERT_EQ(Piece::npos, std::basic_string::npos); ASSERT_EQ(a.find(b), 0U); ASSERT_EQ(a.find(b, 1), Piece::npos); ASSERT_EQ(a.find(c), 23U); ASSERT_EQ(a.find(c, 9), 23U); ASSERT_EQ(a.find(c, Piece::npos), Piece::npos); ASSERT_EQ(b.find(c), Piece::npos); ASSERT_EQ(b.find(c, Piece::npos), Piece::npos); ASSERT_EQ(a.find(d), 0U); ASSERT_EQ(a.find(e), 0U); ASSERT_EQ(a.find(d, 12), 12U); ASSERT_EQ(a.find(e, 17), 17U); std::basic_string not_found( TestFixture::as_string("xx not found bb")); Piece g(not_found); ASSERT_EQ(a.find(g), Piece::npos); // empty string nonsense ASSERT_EQ(d.find(b), Piece::npos); ASSERT_EQ(e.find(b), Piece::npos); ASSERT_EQ(d.find(b, 4), Piece::npos); ASSERT_EQ(e.find(b, 7), Piece::npos); size_t empty_search_pos = std::basic_string().find(std::basic_string()); ASSERT_EQ(d.find(d), empty_search_pos); ASSERT_EQ(d.find(e), empty_search_pos); ASSERT_EQ(e.find(d), empty_search_pos); ASSERT_EQ(e.find(e), empty_search_pos); ASSERT_EQ(d.find(d, 4), std::string().find(std::string(), 4)); ASSERT_EQ(d.find(e, 4), std::string().find(std::string(), 4)); ASSERT_EQ(e.find(d, 4), std::string().find(std::string(), 4)); ASSERT_EQ(e.find(e, 4), std::string().find(std::string(), 4)); constexpr TypeParam kNul = '\0'; ASSERT_EQ(a.find('a'), 0U); ASSERT_EQ(a.find('c'), 2U); ASSERT_EQ(a.find('z'), 25U); ASSERT_EQ(a.find('$'), Piece::npos); ASSERT_EQ(a.find(kNul), Piece::npos); ASSERT_EQ(f.find(kNul), 3U); ASSERT_EQ(f.find('3'), 2U); ASSERT_EQ(f.find('5'), 5U); ASSERT_EQ(g.find('o'), 4U); ASSERT_EQ(g.find('o', 4), 4U); ASSERT_EQ(g.find('o', 5), 8U); ASSERT_EQ(a.find('b', 5), Piece::npos); // empty string nonsense ASSERT_EQ(d.find(kNul), Piece::npos); ASSERT_EQ(e.find(kNul), Piece::npos); ASSERT_EQ(d.find(kNul, 4), Piece::npos); ASSERT_EQ(e.find(kNul, 7), Piece::npos); ASSERT_EQ(d.find('x'), Piece::npos); ASSERT_EQ(e.find('x'), Piece::npos); ASSERT_EQ(d.find('x', 4), Piece::npos); ASSERT_EQ(e.find('x', 7), Piece::npos); ASSERT_EQ(a.find(b.data(), 1, 0), 1U); ASSERT_EQ(a.find(c.data(), 9, 0), 9U); ASSERT_EQ(a.find(c.data(), Piece::npos, 0), Piece::npos); ASSERT_EQ(b.find(c.data(), Piece::npos, 0), Piece::npos); // empty string nonsense ASSERT_EQ(d.find(b.data(), 4, 0), Piece::npos); ASSERT_EQ(e.find(b.data(), 7, 0), Piece::npos); ASSERT_EQ(a.find(b.data(), 1), Piece::npos); ASSERT_EQ(a.find(c.data(), 9), 23U); ASSERT_EQ(a.find(c.data(), Piece::npos), Piece::npos); ASSERT_EQ(b.find(c.data(), Piece::npos), Piece::npos); // empty string nonsense ASSERT_EQ(d.find(b.data(), 4), Piece::npos); ASSERT_EQ(e.find(b.data(), 7), Piece::npos); ASSERT_EQ(a.rfind(b), 0U); ASSERT_EQ(a.rfind(b, 1), 0U); ASSERT_EQ(a.rfind(c), 23U); ASSERT_EQ(a.rfind(c, 22U), Piece::npos); ASSERT_EQ(a.rfind(c, 1U), Piece::npos); ASSERT_EQ(a.rfind(c, 0U), Piece::npos); ASSERT_EQ(b.rfind(c), Piece::npos); ASSERT_EQ(b.rfind(c, 0U), Piece::npos); ASSERT_EQ(a.rfind(d), static_cast(a.rfind(std::basic_string()))); ASSERT_EQ(a.rfind(e), a.rfind(std::basic_string())); ASSERT_EQ(a.rfind(d), static_cast(std::basic_string(a).rfind( std::basic_string()))); ASSERT_EQ(a.rfind(e), std::basic_string(a).rfind( std::basic_string())); ASSERT_EQ(a.rfind(d, 12), 12U); ASSERT_EQ(a.rfind(e, 17), 17U); ASSERT_EQ(a.rfind(g), Piece::npos); ASSERT_EQ(d.rfind(b), Piece::npos); ASSERT_EQ(e.rfind(b), Piece::npos); ASSERT_EQ(d.rfind(b, 4), Piece::npos); ASSERT_EQ(e.rfind(b, 7), Piece::npos); // empty string nonsense ASSERT_EQ(d.rfind(d, 4), std::string().rfind(std::string())); ASSERT_EQ(e.rfind(d, 7), std::string().rfind(std::string())); ASSERT_EQ(d.rfind(e, 4), std::string().rfind(std::string())); ASSERT_EQ(e.rfind(e, 7), std::string().rfind(std::string())); ASSERT_EQ(d.rfind(d), std::string().rfind(std::string())); ASSERT_EQ(e.rfind(d), std::string().rfind(std::string())); ASSERT_EQ(d.rfind(e), std::string().rfind(std::string())); ASSERT_EQ(e.rfind(e), std::string().rfind(std::string())); ASSERT_EQ(g.rfind('o'), 8U); ASSERT_EQ(g.rfind('q'), Piece::npos); ASSERT_EQ(g.rfind('o', 8), 8U); ASSERT_EQ(g.rfind('o', 7), 4U); ASSERT_EQ(g.rfind('o', 3), Piece::npos); ASSERT_EQ(f.rfind(kNul), 3U); ASSERT_EQ(f.rfind(kNul, 12), 3U); ASSERT_EQ(f.rfind('3'), 2U); ASSERT_EQ(f.rfind('5'), 5U); // empty string nonsense ASSERT_EQ(d.rfind('o'), Piece::npos); ASSERT_EQ(e.rfind('o'), Piece::npos); ASSERT_EQ(d.rfind('o', 4), Piece::npos); ASSERT_EQ(e.rfind('o', 7), Piece::npos); ASSERT_EQ(a.rfind(b.data(), 1, 0), 1U); ASSERT_EQ(a.rfind(c.data(), 22U, 0), 22U); ASSERT_EQ(a.rfind(c.data(), 1U, 0), 1U); ASSERT_EQ(a.rfind(c.data(), 0U, 0), 0U); ASSERT_EQ(b.rfind(c.data(), 0U, 0), 0U); ASSERT_EQ(d.rfind(b.data(), 4, 0), 0U); ASSERT_EQ(e.rfind(b.data(), 7, 0), 0U); std::basic_string one_two_three_four( TestFixture::as_string("one,two:three;four")); std::basic_string comma_colon(TestFixture::as_string(",:")); ASSERT_EQ(3U, Piece(one_two_three_four).find_first_of(comma_colon)); ASSERT_EQ(a.find_first_of(b), 0U); ASSERT_EQ(a.find_first_of(b, 0), 0U); ASSERT_EQ(a.find_first_of(b, 1), 1U); ASSERT_EQ(a.find_first_of(b, 2), 2U); ASSERT_EQ(a.find_first_of(b, 3), Piece::npos); ASSERT_EQ(a.find_first_of(c), 23U); ASSERT_EQ(a.find_first_of(c, 23), 23U); ASSERT_EQ(a.find_first_of(c, 24), 24U); ASSERT_EQ(a.find_first_of(c, 25), 25U); ASSERT_EQ(a.find_first_of(c, 26), Piece::npos); ASSERT_EQ(g.find_first_of(b), 13U); ASSERT_EQ(g.find_first_of(c), 0U); ASSERT_EQ(a.find_first_of(f), Piece::npos); ASSERT_EQ(f.find_first_of(a), Piece::npos); // empty string nonsense ASSERT_EQ(a.find_first_of(d), Piece::npos); ASSERT_EQ(a.find_first_of(e), Piece::npos); ASSERT_EQ(d.find_first_of(b), Piece::npos); ASSERT_EQ(e.find_first_of(b), Piece::npos); ASSERT_EQ(d.find_first_of(d), Piece::npos); ASSERT_EQ(e.find_first_of(d), Piece::npos); ASSERT_EQ(d.find_first_of(e), Piece::npos); ASSERT_EQ(e.find_first_of(e), Piece::npos); ASSERT_EQ(a.find_first_not_of(b), 3U); ASSERT_EQ(a.find_first_not_of(c), 0U); ASSERT_EQ(b.find_first_not_of(a), Piece::npos); ASSERT_EQ(c.find_first_not_of(a), Piece::npos); ASSERT_EQ(f.find_first_not_of(a), 0U); ASSERT_EQ(a.find_first_not_of(f), 0U); ASSERT_EQ(a.find_first_not_of(d), 0U); ASSERT_EQ(a.find_first_not_of(e), 0U); ASSERT_EQ(a.find_first_not_of(d, 1), 1U); ASSERT_EQ(a.find_first_not_of(e, 1), 1U); ASSERT_EQ(a.find_first_not_of(d, a.size()), Piece::npos); ASSERT_EQ(a.find_first_not_of(e, a.size()), Piece::npos); // empty string nonsense ASSERT_EQ(d.find_first_not_of(a), Piece::npos); ASSERT_EQ(e.find_first_not_of(a), Piece::npos); ASSERT_EQ(d.find_first_not_of(d), Piece::npos); ASSERT_EQ(e.find_first_not_of(d), Piece::npos); ASSERT_EQ(d.find_first_not_of(e), Piece::npos); ASSERT_EQ(e.find_first_not_of(e), Piece::npos); std::basic_string equals(TestFixture::as_string("====")); Piece h(equals); ASSERT_EQ(h.find_first_not_of('='), Piece::npos); ASSERT_EQ(h.find_first_not_of('=', 3), Piece::npos); ASSERT_EQ(h.find_first_not_of(kNul), 0U); ASSERT_EQ(g.find_first_not_of('x'), 2U); ASSERT_EQ(f.find_first_not_of(kNul), 0U); ASSERT_EQ(f.find_first_not_of(kNul, 3), 4U); ASSERT_EQ(f.find_first_not_of(kNul, 2), 2U); // empty string nonsense ASSERT_EQ(d.find_first_not_of('x'), Piece::npos); ASSERT_EQ(e.find_first_not_of('x'), Piece::npos); ASSERT_EQ(d.find_first_not_of(kNul), Piece::npos); ASSERT_EQ(e.find_first_not_of(kNul), Piece::npos); // Piece g("xx not found bb"); std::basic_string fifty_six(TestFixture::as_string("56")); Piece i(fifty_six); ASSERT_EQ(h.find_last_of(a), Piece::npos); ASSERT_EQ(g.find_last_of(a), g.size()-1); ASSERT_EQ(a.find_last_of(b), 2U); ASSERT_EQ(a.find_last_of(c), a.size()-1); ASSERT_EQ(f.find_last_of(i), 6U); ASSERT_EQ(a.find_last_of('a'), 0U); ASSERT_EQ(a.find_last_of('b'), 1U); ASSERT_EQ(a.find_last_of('z'), 25U); ASSERT_EQ(a.find_last_of('a', 5), 0U); ASSERT_EQ(a.find_last_of('b', 5), 1U); ASSERT_EQ(a.find_last_of('b', 0), Piece::npos); ASSERT_EQ(a.find_last_of('z', 25), 25U); ASSERT_EQ(a.find_last_of('z', 24), Piece::npos); ASSERT_EQ(f.find_last_of(i, 5), 5U); ASSERT_EQ(f.find_last_of(i, 6), 6U); ASSERT_EQ(f.find_last_of(a, 4), Piece::npos); // empty string nonsense ASSERT_EQ(f.find_last_of(d), Piece::npos); ASSERT_EQ(f.find_last_of(e), Piece::npos); ASSERT_EQ(f.find_last_of(d, 4), Piece::npos); ASSERT_EQ(f.find_last_of(e, 4), Piece::npos); ASSERT_EQ(d.find_last_of(d), Piece::npos); ASSERT_EQ(d.find_last_of(e), Piece::npos); ASSERT_EQ(e.find_last_of(d), Piece::npos); ASSERT_EQ(e.find_last_of(e), Piece::npos); ASSERT_EQ(d.find_last_of(f), Piece::npos); ASSERT_EQ(e.find_last_of(f), Piece::npos); ASSERT_EQ(d.find_last_of(d, 4), Piece::npos); ASSERT_EQ(d.find_last_of(e, 4), Piece::npos); ASSERT_EQ(e.find_last_of(d, 4), Piece::npos); ASSERT_EQ(e.find_last_of(e, 4), Piece::npos); ASSERT_EQ(d.find_last_of(f, 4), Piece::npos); ASSERT_EQ(e.find_last_of(f, 4), Piece::npos); ASSERT_EQ(a.find_last_not_of(b), a.size()-1); ASSERT_EQ(a.find_last_not_of(c), 22U); ASSERT_EQ(b.find_last_not_of(a), Piece::npos); ASSERT_EQ(b.find_last_not_of(b), Piece::npos); ASSERT_EQ(f.find_last_not_of(i), 4U); ASSERT_EQ(a.find_last_not_of(c, 24), 22U); ASSERT_EQ(a.find_last_not_of(b, 3), 3U); ASSERT_EQ(a.find_last_not_of(b, 2), Piece::npos); // empty string nonsense ASSERT_EQ(f.find_last_not_of(d), f.size()-1); ASSERT_EQ(f.find_last_not_of(e), f.size()-1); ASSERT_EQ(f.find_last_not_of(d, 4), 4U); ASSERT_EQ(f.find_last_not_of(e, 4), 4U); ASSERT_EQ(d.find_last_not_of(d), Piece::npos); ASSERT_EQ(d.find_last_not_of(e), Piece::npos); ASSERT_EQ(e.find_last_not_of(d), Piece::npos); ASSERT_EQ(e.find_last_not_of(e), Piece::npos); ASSERT_EQ(d.find_last_not_of(f), Piece::npos); ASSERT_EQ(e.find_last_not_of(f), Piece::npos); ASSERT_EQ(d.find_last_not_of(d, 4), Piece::npos); ASSERT_EQ(d.find_last_not_of(e, 4), Piece::npos); ASSERT_EQ(e.find_last_not_of(d, 4), Piece::npos); ASSERT_EQ(e.find_last_not_of(e, 4), Piece::npos); ASSERT_EQ(d.find_last_not_of(f, 4), Piece::npos); ASSERT_EQ(e.find_last_not_of(f, 4), Piece::npos); ASSERT_EQ(h.find_last_not_of('x'), h.size() - 1); ASSERT_EQ(h.find_last_not_of('='), Piece::npos); ASSERT_EQ(b.find_last_not_of('c'), 1U); ASSERT_EQ(h.find_last_not_of('x', 2), 2U); ASSERT_EQ(h.find_last_not_of('=', 2), Piece::npos); ASSERT_EQ(b.find_last_not_of('b', 1), 0U); // empty string nonsense ASSERT_EQ(d.find_last_not_of('x'), Piece::npos); ASSERT_EQ(e.find_last_not_of('x'), Piece::npos); ASSERT_EQ(d.find_last_not_of(kNul), Piece::npos); ASSERT_EQ(e.find_last_not_of(kNul), Piece::npos); ASSERT_EQ(a.substr(0, 3), b); ASSERT_EQ(a.substr(23), c); ASSERT_EQ(a.substr(23, 3), c); ASSERT_EQ(a.substr(23, 99), c); ASSERT_EQ(a.substr(), a); ASSERT_EQ(a.substr(0), a); ASSERT_EQ(a.substr(3, 2), TestFixture::as_string("de")); ASSERT_EQ(d.substr(0, 99), e); } TYPED_TEST(CommonStringPieceTest, CheckCustom) { std::basic_string foobar(TestFixture::as_string("foobar")); BasicStringPiece a(foobar); std::basic_string s1(TestFixture::as_string("123")); s1 += static_cast('\0'); s1 += TestFixture::as_string("456"); BasicStringPiece b(s1); BasicStringPiece e; std::basic_string s2; // remove_prefix BasicStringPiece c(a); c.remove_prefix(3); ASSERT_EQ(c, TestFixture::as_string("bar")); c = a; c.remove_prefix(0); ASSERT_EQ(c, a); c.remove_prefix(c.size()); ASSERT_EQ(c, e); // remove_suffix c = a; c.remove_suffix(3); ASSERT_EQ(c, TestFixture::as_string("foo")); c = a; c.remove_suffix(0); ASSERT_EQ(c, a); c.remove_suffix(c.size()); ASSERT_EQ(c, e); // assignment c = foobar.c_str(); ASSERT_EQ(c, a); c = {foobar.c_str(), 6}; ASSERT_EQ(c, a); c = {foobar.c_str(), 0}; ASSERT_EQ(c, e); c = {foobar.c_str(), 7}; // Note, has an embedded NULL ASSERT_NE(c, a); // operator STRING_TYPE() std::basic_string s5(std::basic_string(a).c_str(), 7); // Note, has an embedded NULL ASSERT_EQ(c, s5); std::basic_string s6(e); ASSERT_TRUE(s6.empty()); } TEST(StringPieceTest, CheckCustom) { StringPiece a("foobar"); std::string s1("123"); s1 += '\0'; s1 += "456"; StringPiece b(s1); StringPiece e; std::string s2; StringPiece c; c = {"foobar", 6}; ASSERT_EQ(c, a); c = {"foobar", 0}; ASSERT_EQ(c, e); c = {"foobar", 7}; ASSERT_NE(c, a); } TYPED_TEST(CommonStringPieceTest, CheckNULL) { BasicStringPiece s; ASSERT_EQ(s.data(), nullptr); ASSERT_EQ(s.size(), 0U); std::basic_string str(s); ASSERT_EQ(str.length(), 0U); ASSERT_EQ(str, std::basic_string()); } TYPED_TEST(CommonStringPieceTest, CheckComparisons2) { std::basic_string alphabet( TestFixture::as_string("abcdefghijklmnopqrstuvwxyz")); std::basic_string alphabet_z( TestFixture::as_string("abcdefghijklmnopqrstuvwxyzz")); std::basic_string alphabet_y( TestFixture::as_string("abcdefghijklmnopqrstuvwxyy")); BasicStringPiece abc(alphabet); // check comparison operations on strings longer than 4 bytes. ASSERT_EQ(abc, BasicStringPiece(alphabet)); ASSERT_EQ(abc.compare(BasicStringPiece(alphabet)), 0); ASSERT_TRUE(abc < BasicStringPiece(alphabet_z)); ASSERT_LT(abc.compare(BasicStringPiece(alphabet_z)), 0); ASSERT_TRUE(abc > BasicStringPiece(alphabet_y)); ASSERT_GT(abc.compare(BasicStringPiece(alphabet_y)), 0); } TYPED_TEST(CommonStringPieceTest, StringCompareNotAmbiguous) { ASSERT_TRUE(TestFixture::as_string("hello").c_str() == TestFixture::as_string("hello")); ASSERT_TRUE(TestFixture::as_string("hello").c_str() < TestFixture::as_string("world")); } TYPED_TEST(CommonStringPieceTest, HeterogenousStringPieceEquals) { std::basic_string hello(TestFixture::as_string("hello")); ASSERT_EQ(BasicStringPiece(hello), hello); ASSERT_EQ(hello.c_str(), BasicStringPiece(hello)); } // std::u16string-specific stuff TEST(StringPiece16Test, CheckSTL) { // Check some non-ascii characters. std::u16string fifth(u"123"); fifth.push_back(0x0000); fifth.push_back(0xd8c5); fifth.push_back(0xdffe); StringPiece16 f(fifth); ASSERT_EQ(f[3], '\0'); ASSERT_EQ(f[5], 0xdffe); ASSERT_EQ(f.size(), 6U); } TEST(StringPiece16Test, CheckConversion) { // Make sure that we can convert from UTF8 to UTF16 and back. We use a // character (G clef) outside the BMP to test this. const char* kTest = "\U0001D11E"; ASSERT_EQ(UTF16ToUTF8(UTF8ToUTF16(kTest)), kTest); } TYPED_TEST(CommonStringPieceTest, CheckConstructors) { std::basic_string str(TestFixture::as_string("hello world")); std::basic_string empty; ASSERT_EQ(str, BasicStringPiece(str)); ASSERT_EQ(str, BasicStringPiece(str.c_str())); ASSERT_TRUE(TestFixture::as_string("hello") == BasicStringPiece(str.c_str(), 5)); ASSERT_EQ( empty, BasicStringPiece( str.c_str(), static_cast::size_type>(0))); ASSERT_EQ(empty, BasicStringPiece()); ASSERT_TRUE( empty == BasicStringPiece( nullptr, static_cast::size_type>(0))); ASSERT_EQ(empty, BasicStringPiece()); ASSERT_EQ(empty, BasicStringPiece(empty)); } TEST(StringPieceTest, ConstexprCtor) { { constexpr StringPiece piece; std::ignore = piece; } { constexpr StringPiece piece("abc"); std::ignore = piece; } { constexpr StringPiece piece("abc", 2); std::ignore = piece; } } TEST(StringPieceTest, OutOfBoundsDeath) { { constexpr StringPiece piece; ASSERT_DEATH_IF_SUPPORTED(piece[0], ""); } { constexpr StringPiece piece; ASSERT_DEATH_IF_SUPPORTED(piece.front(), ""); } { constexpr StringPiece piece; ASSERT_DEATH_IF_SUPPORTED(piece.back(), ""); } { StringPiece piece; ASSERT_DEATH_IF_SUPPORTED(piece.remove_suffix(1), ""); } { StringPiece piece; ASSERT_DEATH_IF_SUPPORTED(piece.remove_prefix(1), ""); } { StringPiece piece; ASSERT_DEATH_IF_SUPPORTED(piece.copy(nullptr, 0, 1), ""); } { StringPiece piece; ASSERT_DEATH_IF_SUPPORTED(piece.substr(1), ""); } } TEST(StringPieceTest, ConstexprData) { { constexpr StringPiece piece; static_assert(piece.data() == nullptr, ""); } { constexpr StringPiece piece("abc"); static_assert(piece.data()[0] == 'a', ""); static_assert(piece.data()[1] == 'b', ""); static_assert(piece.data()[2] == 'c', ""); } { constexpr StringPiece piece("def", 2); static_assert(piece.data()[0] == 'd', ""); static_assert(piece.data()[1] == 'e', ""); } } TEST(StringPieceTest, ConstexprSize) { { constexpr StringPiece piece; static_assert(piece.size() == 0, ""); } { constexpr StringPiece piece("abc"); static_assert(piece.size() == 3, ""); } { constexpr StringPiece piece("def", 2); static_assert(piece.size() == 2, ""); } } TEST(StringPieceTest, ConstexprFront) { static_assert(StringPiece("abc").front() == 'a', ""); } TEST(StringPieceTest, ConstexprBack) { static_assert(StringPiece("abc").back() == 'c', ""); } TEST(StringPieceTest, Compare) { constexpr StringPiece piece = "def"; static_assert(piece.compare("ab") == 1, ""); static_assert(piece.compare("abc") == 1, ""); static_assert(piece.compare("abcd") == 1, ""); static_assert(piece.compare("de") == 1, ""); static_assert(piece.compare("def") == 0, ""); static_assert(piece.compare("defg") == -1, ""); static_assert(piece.compare("gh") == -1, ""); static_assert(piece.compare("ghi") == -1, ""); static_assert(piece.compare("ghij") == -1, ""); static_assert(piece.compare(0, 0, "") == 0, ""); static_assert(piece.compare(0, 1, "d") == 0, ""); static_assert(piece.compare(0, 2, "de") == 0, ""); static_assert(piece.compare(0, 3, "def") == 0, ""); static_assert(piece.compare(1, 0, "") == 0, ""); static_assert(piece.compare(1, 1, "e") == 0, ""); static_assert(piece.compare(1, 2, "ef") == 0, ""); static_assert(piece.compare(1, 3, "ef") == 0, ""); static_assert(piece.compare(2, 0, "") == 0, ""); static_assert(piece.compare(2, 1, "f") == 0, ""); static_assert(piece.compare(2, 2, "f") == 0, ""); static_assert(piece.compare(2, 3, "f") == 0, ""); static_assert(piece.compare(3, 0, "") == 0, ""); static_assert(piece.compare(3, 1, "") == 0, ""); static_assert(piece.compare(3, 2, "") == 0, ""); static_assert(piece.compare(3, 3, "") == 0, ""); static_assert(piece.compare(0, 0, "def", 0) == 0, ""); static_assert(piece.compare(0, 1, "def", 1) == 0, ""); static_assert(piece.compare(0, 2, "def", 2) == 0, ""); static_assert(piece.compare(0, 3, "def", 3) == 0, ""); static_assert(piece.compare(1, 0, "ef", 0) == 0, ""); static_assert(piece.compare(1, 1, "ef", 1) == 0, ""); static_assert(piece.compare(1, 2, "ef", 2) == 0, ""); static_assert(piece.compare(1, 3, "ef", 2) == 0, ""); static_assert(piece.compare(2, 0, "f", 0) == 0, ""); static_assert(piece.compare(2, 1, "f", 1) == 0, ""); static_assert(piece.compare(2, 2, "f", 1) == 0, ""); static_assert(piece.compare(2, 3, "f", 1) == 0, ""); static_assert(piece.compare(3, 0, "", 0) == 0, ""); static_assert(piece.compare(3, 1, "", 0) == 0, ""); static_assert(piece.compare(3, 2, "", 0) == 0, ""); static_assert(piece.compare(3, 3, "", 0) == 0, ""); static_assert(piece.compare(0, 0, "def", 0, 0) == 0, ""); static_assert(piece.compare(0, 1, "def", 0, 1) == 0, ""); static_assert(piece.compare(0, 2, "def", 0, 2) == 0, ""); static_assert(piece.compare(0, 3, "def", 0, 3) == 0, ""); static_assert(piece.compare(1, 0, "def", 1, 0) == 0, ""); static_assert(piece.compare(1, 1, "def", 1, 1) == 0, ""); static_assert(piece.compare(1, 2, "def", 1, 2) == 0, ""); static_assert(piece.compare(1, 3, "def", 1, 3) == 0, ""); static_assert(piece.compare(2, 0, "def", 2, 0) == 0, ""); static_assert(piece.compare(2, 1, "def", 2, 1) == 0, ""); static_assert(piece.compare(2, 2, "def", 2, 2) == 0, ""); static_assert(piece.compare(2, 3, "def", 2, 3) == 0, ""); static_assert(piece.compare(3, 0, "def", 3, 0) == 0, ""); static_assert(piece.compare(3, 1, "def", 3, 1) == 0, ""); static_assert(piece.compare(3, 2, "def", 3, 2) == 0, ""); static_assert(piece.compare(3, 3, "def", 3, 3) == 0, ""); } TEST(StringPieceTest, Substr) { constexpr StringPiece piece = "abcdefghijklmnopqrstuvwxyz"; static_assert(piece.substr(0, 2) == "ab", ""); static_assert(piece.substr(0, 3) == "abc", ""); static_assert(piece.substr(0, 4) == "abcd", ""); static_assert(piece.substr(3, 2) == "de", ""); static_assert(piece.substr(3, 3) == "def", ""); static_assert(piece.substr(23) == "xyz", ""); static_assert(piece.substr(23, 3) == "xyz", ""); static_assert(piece.substr(23, 99) == "xyz", ""); static_assert(piece.substr() == piece, ""); static_assert(piece.substr(0) == piece, ""); static_assert(piece.substr(0, 99) == piece, ""); } TEST(StringPieceTest, Find) { constexpr StringPiece foobar("foobar", 6); constexpr StringPiece foo = foobar.substr(0, 3); constexpr StringPiece bar = foobar.substr(3); // find static_assert(foobar.find(bar, 0) == 3, ""); static_assert(foobar.find('o', 0) == 1, ""); static_assert(foobar.find("ox", 0, 1) == 1, ""); static_assert(foobar.find("ox", 0) == StringPiece::npos, ""); // rfind static_assert(foobar.rfind(bar, 5) == 3, ""); static_assert(foobar.rfind('o', 5) == 2, ""); static_assert(foobar.rfind("ox", 5, 1) == 2, ""); static_assert(foobar.rfind("ox", 5) == StringPiece::npos, ""); // find_first_of static_assert(foobar.find_first_of(foo, 2) == 2, ""); static_assert(foobar.find_first_of('o', 2) == 2, ""); static_assert(foobar.find_first_of("ox", 2, 2) == 2, ""); static_assert(foobar.find_first_of("ox", 2) == 2, ""); // find_last_of static_assert(foobar.find_last_of(foo, 5) == 2, ""); static_assert(foobar.find_last_of('o', 5) == 2, ""); static_assert(foobar.find_last_of("ox", 5, 2) == 2, ""); static_assert(foobar.find_last_of("ox", 5) == 2, ""); // find_first_not_of static_assert(foobar.find_first_not_of(foo, 2) == 3, ""); static_assert(foobar.find_first_not_of('o', 2) == 3, ""); static_assert(foobar.find_first_not_of("ox", 2, 2) == 3, ""); static_assert(foobar.find_first_not_of("ox", 2) == 3, ""); // find_last_not_of static_assert(foobar.find_last_not_of(bar, 5) == 2, ""); static_assert(foobar.find_last_not_of('a', 4) == 3, ""); static_assert(foobar.find_last_not_of("ox", 2, 2) == 0, ""); static_assert(foobar.find_last_not_of("ox", 2) == 0, ""); } } // namespace base